261566592016

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{398729561}}^1$

素因数の和:398729610

約数の個数: 20

約数和(自身を含む): 519145889724

約数和(自身を除く): 257579297708

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 398729561, 797459122, 1594918244, 3189836488, 6379672976, 16347912001, 32695824002, 65391648004, 130783296008, 261566592016]

約数ペア:

[(1, 261566592016), (2, 130783296008), (4, 65391648004), (8, 32695824002), (16, 16347912001), (41, 6379672976), (82, 3189836488), (164, 1594918244), (328, 797459122), (656, 398729561)]